The Michell Instruments Pura pure gas dew point transmitter is a self-contained hygrometer designed specifically to measure trace moisture content in ultra high purity gas applications such as semiconductor manufacturing, fiber optic production, optical ciating processes or pure gas production. With 2- and 3-wire 4 to 20mA analog outputs available, the Pura transmitter offers a measurement range of -120 to -40°Cdp (-184°F to -40°Fdp) and is calibrated to -148 to -40°F (-100 to -40°C).

A hazardous area approval is available for the Michell Instruments Pura pure gas dew point transmitter when the 2-wire analog output is selected. The operating pressure for the Pura must fall within 10-9 torr (10-7 Pa) and 240 barg (24 MPa) and the flow rate can be from 2.11 to 10.59 scfh (1 to 5 Nl/min). This Michell Instruments dew point transmitter is available as a standalone sensor or with an optional sampling block.